class DisplayApiTest

class DisplayApiTest extends FieldUnitTestBase {
  public static function getInfo() {
    return array(
      'name' => 'Field Display API tests',
      'description' => 'Test the display API.',
      'group' => 'Field API',
    );
  }
  function setUp() {
    parent::setUp();

    // Create a field and instance.
    $this->field_name = 'test_field';
    $this->label = $this
      ->randomName();
    $this->cardinality = 4;
    $this->field = array(
      'field_name' => $this->field_name,
      'type' => 'test_field',
      'cardinality' => $this->cardinality,
    );
    $this->instance = array(
      'field_name' => $this->field_name,
      'entity_type' => 'test_entity',
      'bundle' => 'test_bundle',
      'label' => $this->label,
    );
    $this->display_options = array(
      'default' => array(
        'type' => 'field_test_default',
        'settings' => array(
          'test_formatter_setting' => $this
            ->randomName(),
        ),
      ),
      'teaser' => array(
        'type' => 'field_test_default',
        'settings' => array(
          'test_formatter_setting' => $this
            ->randomName(),
        ),
      ),
    );
    field_create_field($this->field);
    field_create_instance($this->instance);

    // Create a display for the default view mode.
    entity_get_display($this->instance['entity_type'], $this->instance['bundle'], 'default')
      ->setComponent($this->field_name, $this->display_options['default'])
      ->save();

    // Create a display for the teaser view mode.
    entity_get_display($this->instance['entity_type'], $this->instance['bundle'], 'teaser')
      ->setComponent($this->field_name, $this->display_options['teaser'])
      ->save();

    // Create an entity with values.
    $this->values = $this
      ->_generateTestFieldValues($this->cardinality);
    $this->entity = field_test_create_entity();
    $this->is_new = TRUE;
    $this->entity->{$this->field_name}[Language::LANGCODE_NOT_SPECIFIED] = $this->values;
    field_test_entity_save($this->entity);
  }

  /**
   * Test the field_view_field() function.
   */
  function testFieldViewField() {

    // No display settings: check that default display settings are used.
    $output = field_view_field($this->entity, $this->field_name);
    $this->content = drupal_render($output);
    $settings = field_info_formatter_settings('field_test_default');
    $setting = $settings['test_formatter_setting'];
    $this
      ->assertText($this->label, 'Label was displayed.');
    foreach ($this->values as $delta => $value) {
      $this
        ->assertText($setting . '|' . $value['value'], format_string('Value @delta was displayed with expected setting.', array(
        '@delta' => $delta,
      )));
    }

    // Check that explicit display settings are used.
    $display = array(
      'label' => 'hidden',
      'type' => 'field_test_multiple',
      'settings' => array(
        'test_formatter_setting_multiple' => $this
          ->randomName(),
        'alter' => TRUE,
      ),
    );
    $output = field_view_field($this->entity, $this->field_name, $display);
    $this->content = drupal_render($output);
    $setting = $display['settings']['test_formatter_setting_multiple'];
    $this
      ->assertNoText($this->label, 'Label was not displayed.');
    $this
      ->assertText('field_test_field_attach_view_alter', 'Alter fired, display passed.');
    $this
      ->assertText('field language is ' . Language::LANGCODE_NOT_SPECIFIED, 'Language is placed onto the context.');
    $array = array();
    foreach ($this->values as $delta => $value) {
      $array[] = $delta . ':' . $value['value'];
    }
    $this
      ->assertText($setting . '|' . implode('|', $array), 'Values were displayed with expected setting.');

    // Check the prepare_view steps are invoked.
    $display = array(
      'label' => 'hidden',
      'type' => 'field_test_with_prepare_view',
      'settings' => array(
        'test_formatter_setting_additional' => $this
          ->randomName(),
      ),
    );
    $output = field_view_field($this->entity, $this->field_name, $display);
    $view = drupal_render($output);
    $this->content = $view;
    $setting = $display['settings']['test_formatter_setting_additional'];
    $this
      ->assertNoText($this->label, 'Label was not displayed.');
    $this
      ->assertNoText('field_test_field_attach_view_alter', 'Alter not fired.');
    foreach ($this->values as $delta => $value) {
      $this
        ->assertText($setting . '|' . $value['value'] . '|' . ($value['value'] + 1), format_string('Value @delta was displayed with expected setting.', array(
        '@delta' => $delta,
      )));
    }

    // View mode: check that display settings specified in the display object
    // are used.
    $output = field_view_field($this->entity, $this->field_name, 'teaser');
    $this->content = drupal_render($output);
    $setting = $this->display_options['teaser']['settings']['test_formatter_setting'];
    $this
      ->assertText($this->label, 'Label was displayed.');
    foreach ($this->values as $delta => $value) {
      $this
        ->assertText($setting . '|' . $value['value'], format_string('Value @delta was displayed with expected setting.', array(
        '@delta' => $delta,
      )));
    }

    // Unknown view mode: check that display settings for 'default' view mode
    // are used.
    $output = field_view_field($this->entity, $this->field_name, 'unknown_view_mode');
    $this->content = drupal_render($output);
    $setting = $this->display_options['default']['settings']['test_formatter_setting'];
    $this
      ->assertText($this->label, 'Label was displayed.');
    foreach ($this->values as $delta => $value) {
      $this
        ->assertText($setting . '|' . $value['value'], format_string('Value @delta was displayed with expected setting.', array(
        '@delta' => $delta,
      )));
    }
  }

  /**
   * Test the field_view_value() function.
   */
  function testFieldViewValue() {

    // No display settings: check that default display settings are used.
    $settings = field_info_formatter_settings('field_test_default');
    $setting = $settings['test_formatter_setting'];
    foreach ($this->values as $delta => $value) {
      $item = $this->entity->{$this->field_name}[Language::LANGCODE_NOT_SPECIFIED][$delta];
      $output = field_view_value($this->entity, $this->field_name, $item);
      $this->content = drupal_render($output);
      $this
        ->assertText($setting . '|' . $value['value'], format_string('Value @delta was displayed with expected setting.', array(
        '@delta' => $delta,
      )));
    }

    // Check that explicit display settings are used.
    $display = array(
      'type' => 'field_test_multiple',
      'settings' => array(
        'test_formatter_setting_multiple' => $this
          ->randomName(),
      ),
    );
    $setting = $display['settings']['test_formatter_setting_multiple'];
    $array = array();
    foreach ($this->values as $delta => $value) {
      $item = $this->entity->{$this->field_name}[Language::LANGCODE_NOT_SPECIFIED][$delta];
      $output = field_view_value($this->entity, $this->field_name, $item, $display);
      $this->content = drupal_render($output);
      $this
        ->assertText($setting . '|0:' . $value['value'], format_string('Value @delta was displayed with expected setting.', array(
        '@delta' => $delta,
      )));
    }

    // Check that prepare_view steps are invoked.
    $display = array(
      'type' => 'field_test_with_prepare_view',
      'settings' => array(
        'test_formatter_setting_additional' => $this
          ->randomName(),
      ),
    );
    $setting = $display['settings']['test_formatter_setting_additional'];
    $array = array();
    foreach ($this->values as $delta => $value) {
      $item = $this->entity->{$this->field_name}[Language::LANGCODE_NOT_SPECIFIED][$delta];
      $output = field_view_value($this->entity, $this->field_name, $item, $display);
      $this->content = drupal_render($output);
      $this
        ->assertText($setting . '|' . $value['value'] . '|' . ($value['value'] + 1), format_string('Value @delta was displayed with expected setting.', array(
        '@delta' => $delta,
      )));
    }

    // View mode: check that display settings specified in the instance are
    // used.
    $setting = $this->display_options['teaser']['settings']['test_formatter_setting'];
    foreach ($this->values as $delta => $value) {
      $item = $this->entity->{$this->field_name}[Language::LANGCODE_NOT_SPECIFIED][$delta];
      $output = field_view_value($this->entity, $this->field_name, $item, 'teaser');
      $this->content = drupal_render($output);
      $this
        ->assertText($setting . '|' . $value['value'], format_string('Value @delta was displayed with expected setting.', array(
        '@delta' => $delta,
      )));
    }

    // Unknown view mode: check that display settings for 'default' view mode
    // are used.
    $setting = $this->display_options['default']['settings']['test_formatter_setting'];
    foreach ($this->values as $delta => $value) {
      $item = $this->entity->{$this->field_name}[Language::LANGCODE_NOT_SPECIFIED][$delta];
      $output = field_view_value($this->entity, $this->field_name, $item, 'unknown_view_mode');
      $this->content = drupal_render($output);
      $this
        ->assertText($setting . '|' . $value['value'], format_string('Value @delta was displayed with expected setting.', array(
        '@delta' => $delta,
      )));
    }
  }

  /**
   * Tests that the prepareView() formatter method still fires for empty values.
   */
  function testFieldEmpty() {

    // Uses \Drupal\field_test\Plugin\field\formatter\TestFieldEmptyFormatter.
    $display = array(
      'label' => 'hidden',
      'type' => 'field_empty_test',
      'settings' => array(
        'test_empty_string' => '**EMPTY FIELD**' . $this
          ->randomName(),
      ),
    );

    // $this->entity is set by the setUp() method and by default contains 4
    // numeric values.  We only want to test the display of this one field.
    $output = field_view_field($this->entity, $this->field_name, $display);
    $view = drupal_render($output);
    $this->content = $view;

    // The test field by default contains values, so should not display the
    // default "empty" text.
    $this
      ->assertNoText($display['settings']['test_empty_string']);

    // Now remove the values from the test field and retest.
    $this->entity->{$this->field_name}[Language::LANGCODE_NOT_SPECIFIED] = array();
    field_test_entity_save($this->entity);
    $output = field_view_field($this->entity, $this->field_name, $display);
    $view = drupal_render($output);
    $this->content = $view;

    // This time, as the field values have been removed, we *should* show the
    // default "empty" text.
    $this
      ->assertText($display['settings']['test_empty_string']);
  }

}